Abstract:
This gridded dataset contains the revised bathymetry model beneath the Brunt Ice Shelf and Stancomb-Wills Glacier Tongue, Antarctica, The revised bathymetric model integrates existing direct bathymetry observations and free air gravity anomaly data to provide the best possible estimate of sub-ice shelf bathymetry. The input direct bathymetric/topographic observations, observation locations, and the input free air compilation are also available as additional separate grid files.
All files are provided in NetCDF format in Antarctic Polar Stereographic (EPSG:3031) projection with a horizontal resolution of 2km. The output bathymetry model (Final_adjusted_topography.nc), input topographic observations (Topographic_value_grid.nc) and input topographic observation coverage (Topographic_observation_coverage.nc) have elevation values of metres, positive upwards. The input free air gravity anomaly grid (Brunt_FAA_compilation_grid.nc) has values of mGal.
The bathymetric model was produced for the paper of Hodgson et al., (2019) investigating the past and future dynamics of the Brunt Ice Shelf. The publication reference is;
Hodgson, D. A., Jordan, T. A., De Rydt, J., Fretwell, P. T., Seddon, S. A., Becker, D., Hogan, K. A., Smith, A. M., and Vaughan, D. G.: Past and future dynamics of the Brunt Ice Shelf from seabed bathymetry and ice shelf geometry, The Cryosphere Discuss., https://doi.org/10.5194/tc-2018-206, in review, 2018.
Keywords:
Brunt Ice Shelf, Stancomb-Wills Glacier Tongue, bathymetry, gravity
Hodgson, D., Jordan, T., de Rydt, J., Fretwell, P., Seddon, S., Becker, D., Hogan, K., Smith, A., & Vaughan, D. (2019). Gravity enhanced bathymetric model beneath the Brunt Ice Shelf and Stancomb-Wills Glacier Tongue (Version 1) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/40bcedbe-fea0-4b41-b2f7-bf2d8494b5ad
| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. It is advised to liaise with the Personnel listed above when using this data. |
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| Creation Date: | 2019-01-31 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | Alexander Tate |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Dr Tom Jordan |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Dominic Hodgson |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Peter T Fretwell |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Kelly Hogan |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr Jan De Rydt |
| Role(s) | Investigator |
| Organisation | Northumbria University |
| Name | Samual Seddon |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Dr David Becker |
| Role(s) | Investigator |
| Organisation | Technische Universitaet Darmstadt |
| Name | Andrew M Smith |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Prof David Vaughan |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | Hodgson, D. A., Jordan, T. A., De Rydt, J., Fretwell, P. T., Seddon, S. A., Becker, D., Hogan, K. A., Smith, A. M., and Vaughan, D. G.: Past and future dynamics of the Brunt Ice Shelf from seabed bathymetry and ice shelf geometry, The Cryosphere Discuss., https://doi.org/10.5194/tc-2018-206, in review, 2018. | |
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| Quality: | Data quality issues are described in the methods chapter of:- Hodgson, D. A., Jordan, T. A., De Rydt, J., Fretwell, P. T., Seddon, S. A., Becker, D., Hogan, K. A., Smith, A. M., and Vaughan, D. G.: Past and future dynamics of the Brunt Ice Shelf from seabed bathymetry and ice shelf geometry, The Cryosphere Discuss., https://doi.org/10.5194/tc-2018-206, in review, 2018. |
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| Lineage: | Data lineage is described in the methods chapter of:- Hodgson, D. A., Jordan, T. A., De Rydt, J., Fretwell, P. T., Seddon, S. A., Becker, D., Hogan, K. A., Smith, A. M., and Vaughan, D. G.: Past and future dynamics of the Brunt Ice Shelf from seabed bathymetry and ice shelf geometry, The Cryosphere Discuss., https://doi.org/10.5194/tc-2018-206, in review, 2018. |
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| Spatial Coverage: | |
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| Latitude | |
| Southernmost | -77.42475 |
| Northernmost | -73.27209 |
| Longitude | |
| Westernmost | -30.27815 |
| Easternmost | -13.53223 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Data Resolution: | |
| Latitude Resolution | 2000 m |
| Longitude Resolution | 2000 m |
| Horizontal Resolution Range | N/A |
| Vertical Resolution | N/A |
| Vertical Resolution Range | N/A |
| Temporal Resolution | N/A |
| Temporal Resolution Range | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | Brunt Ice Shelf |
| Location | Weddell Sea |
| Detailed Location | N/A |
| Location | Antarctica |
| Detailed Location | Stancomb-Wills Glacier Tongue |
| Location | Sea Floor |
| Detailed Location | N/A |
| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | N/A |
| Distribution Format | CDF |
| Fees | N/A |